package com.xiaobing.common.utils;


import com.xiaobing.common.constant.CacheConstants;
import com.xiaobing.common.core.JwtUtils;
import com.xiaobing.common.core.TokenConstants;
import com.xiaobing.common.entity.system.SysUser;
import com.xiaobing.common.interceptor.SecurityContextHolder;
import com.xiaobing.common.povo.LoginUser;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

import javax.servlet.http.HttpServletRequest;

/**
 * 权限获取工具类
 *
 * @author xulk
 */

@Configuration
public class SecurityUtils {


    /**
     * 获取当前登录用户信息
     *
     * @return 用户信息
     * @ param token 指定token
     */
    public static LoginUser getLoginUser() {
        RedisTemplate redisTemplate = RedisStaticConfig.getRedisTemplate();
        String userKey = JwtUtils.getUserKey(getToken());
        String tokenKey =  CacheConstants.LOGIN_TOKEN_KEY + userKey;
        Object o = redisTemplate.opsForValue().get(  tokenKey );
        return (LoginUser) o;
    }





    /**
     * 获取用户ID
     */
    public static Long getUserId() {
        LoginUser loginUser = getLoginUser();
        SysUser sysUser = loginUser.getSysUser();
        return sysUser.getId();
    }


    /**
     * 获取用户ID 返回字符串
     */
    public static String getUserIdStr() {
        LoginUser loginUser = getLoginUser();
        SysUser sysUser = loginUser.getSysUser();
        if(StringUtils.isNotNull( sysUser.getId() )){
            return String.valueOf( sysUser.getId() );
        }
        return "";
    }


    /**
     * 获取用户名称
     */
    public static String getUsername() {
        LoginUser loginUser = getLoginUser();
        SysUser sysUser = loginUser.getSysUser();
        return sysUser.getUserName();
    }

    /**
     * 获取用户key
     */
    public static String getUserKey() {
        return SecurityContextHolder.getUserKey();
    }

    /*
     * 获取登录用户信息
     */
/*    public static LoginUser getLoginUser() {
        return SecurityContextHolder.get(SecurityConstants.LOGIN_USER, LoginUser.class);
    }*/

    /**
     * 获取请求token
     */
    public static String getToken() {
        String token = getToken(ServletUtils.getRequest());
        return token;
    }

    /**
     * 根据request获取请求token
     */
    public static String getToken(HttpServletRequest request) {
        // 从header获取token标识
        String token = request.getHeader(TokenConstants.AUTHENTICATION);
        return replaceTokenPrefix(token);
    }

    /**
     * 裁剪token前缀
     */
    public static String replaceTokenPrefix(String token) {
        // 如果前端设置了令牌前缀，则裁剪掉前缀
        if (StringUtils.isNotEmpty(token) && token.startsWith(TokenConstants.PREFIX)) {
            token = token.replaceFirst(TokenConstants.PREFIX, "");
        }
        return token;
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId) {
        return userId != null && 1L == userId;
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword     真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword) {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }
}
